Wire Guage Table

Wire and Ring Inner Diameter Reference Table

The table below compares the 2 most popular wire gauge systems, decimal inches, fractions and metric for your convenience.

For more information on rings etc please go to Store & Product Info and look under Project and Product Selection Help

Note that there are 2 gauge systems: SWG and AWG.

To prevent confusion it may be best to refer to decimal inches or mm when comparing rings sizes - we post both with our rings for your convenience.

* People familiar with gauges will notice we use AWG for smaller wire and SWG for larger wire. We know it is confusing; unfortunately it was a convention we adopted years before we knew there was a problem. Please use decimal inches when confused.